Episode Titles: Explosion
You are viewing a list of 1 The Big Bang Theory episode featuring "Explosion" in their title.
The Explosion Implosion
Season 11, Episode 4 - Aired October 16, 2017
When Howard worries about raising another child, he and Sheldon bond as they assemble a model rocket together. Meanwhile, Leonard is freaked out when he learns that Penny and his mother have become friends.